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Y20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Y20

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GBT Y20

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This page is mainly introduced the Y20 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Y20,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Y20

Steel Garde:Y20
Type:Special Alloy
Country:China
Standard:GBT
Application:China structural steel and alloy steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength	698～709	σb/MPa
Yield Strength	634	σ 0.2 ≥/MPa
Elongation	23	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	779～764	-
HRC	30	-

Physical Properties

Thermal expansion	70-50	e-6/K
Thermal conductivity	16-81	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	6792-2461	째C
Density	2371-5543	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
Y20 Special Alloy	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk